The Insertion Torque-Depth Curve Integral and Implant Micromotion: A Study on Polyurethane Foam Blocks.

IF 1.7
Anna De Marzi, Paolo Arosio, Federico Arosio, Giorgia Franchin, Danilo Alessio Di Stefano
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Abstract

Purpose: This in vitro study aimed to investigate the relationship between the torque-depth integral (I) and implant micromotion.

Materials and methods: Cylindrical and tapered-cylindrical implants were inserted into monolithic polyurethane foam blocks, featuring three different densities, after undersized, standard, oversized preparation, and the integral (I), as well as the insertion torque (IT), were measured through a torque-measuring micromotor. Micromotion was measured by applying a lateral load to abutments mounted on implants and recording displacement through a tensile testing machine. I-micromotion and IT-micromotion relationships were studied by regression analyses.

Results: Significant inverse nonlinear relationships (p<0.001) were observed between (I) and micromotion, as well as IT and micromotion, across all implant designs and preparation protocols, according to a negative-power equation. No statistically significant differences were found between the slopes of (I)-micromotion and IT-micromotion curves.

Conclusions: Results of the present study provide additional evidence that the torque-depth integral (I) is a reliable primary stability-measuring parameter. Yet, tests should be repeated on materials more similar to bone, and applying axial instead of lateral loads to implants.

插入力矩-深度曲线积分与植入体微动:聚氨酯泡沫块的研究。
目的:本体外研究旨在探讨扭矩-深度积分(I)与种植体微动的关系。材料和方法:将圆柱形和锥形圆柱形植入物插入到尺寸过小、标准、超大三种不同密度的整体式聚氨酯泡沫块中,通过测量扭矩的微型电机测量积分(I)和插入扭矩(IT)。微动是通过对安装在种植体上的基台施加侧向载荷并通过拉伸试验机记录位移来测量的。通过回归分析研究i -微动和it -微动之间的关系。结论:本研究的结果提供了额外的证据,证明扭矩-深度积分(I)是一个可靠的主要稳定性测量参数。然而,应该在与骨更相似的材料上重复试验,并对植入物施加轴向载荷而不是侧向载荷。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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